The Incredible Hulk was also strolling around unnoticed around the convention, disguised as a cigar-smoking, mustached old man.

“Got to hide out and enjoy #comiccon2015,” the Avengers actor, 47, tweeted.

Ruffalo and Leto aren’t the first celebrities to take advantage of identity-concealing costumes at Comic Con. Last year, Daniel Radcliffe had a blast going to the event undercover as Spider-Man.

“It’s great to be able to put on a mask and interact with people who don’t know who I really am,” he told Entertainment Weekly. “I spoke in an American accent the whole time. I felt like a spy about to be found out at any moment.”